c_xml is a class that can convert between XML files and arrays or strings. It can parse an XML file into a DOM document object, so it can be returned as an array or displayed using a XSL stylesheet. The parsed XML document can also be manipulated to add, change, or remove nodes. Nodes may be searched using XPath. The resulting document can be regenerated in XML format.
The ODF-XSLT document generator is a library for PHP 5 that brings the full power of XSLT to your OpenDocument files. It enables you to use ODF files as if they were plain XSLT templates. It supports multiple document types (text, spreadsheet, etcetera), has full XSLT support, and it allows templates to be edited from within your favorite office suite, such as OpenOffice.org or KOffice 2. ODF-XSLT comes with a command-line tool for quick conversions.
myXML is a PHP implementation of the W3C's DOM, XPath, and XSLT recommendations that does not require additional libraries. It allows you to take advantage of XML/XSLT technologies even if your provider does not support it. The DOM API features standard names for methods and properties and should be compatible with future releases of PHP. The library allows the execution of PHP code on the fly, and inserts result into a DOM tree or attribute value.